I had this problem due to using a different e-mail on accident to set up wpmudev again. I got in contact with someone from wpmudev and they had to release my website from the previous e-mail/account with wpmudev so that the login would work. I hope this might help others who are searching for answers to the same problem.

How do you rate me?

Thank you for rating your experience!

We’re thrilled to hear you had a great experience with . Would you like to leave a comment about your experience?
Thanks for voting on your experience with , we’d love to get some feedback please.
Ohh no! We’re really sorry to hear you didn’t have a pleasant experience with , we’re always looking at how we can improve and would appreciate you provide some further feedback here please.
Type your feedback here

it's great that you had a positive one. Based on your experience in this ticket would you please be kind enough to rate us externally on: